Separate any song into stems — vocals, drums, bass and instruments — with on-device AI. Extract acapellas and instrumentals, right in your browser.
Isolate the lead and backing vocals
Extract the full drum and percussion track
Pull out the bassline on its own
Everything else — synths, guitars, keys
Upload or drag in any audio track
Vocals + Instrumental, or full separation
Export each isolated track as WAV
Grab an acapella or instrumental to build remixes and mashups
Create clean transitions and live edits from isolated stems
Remove vocals for karaoke or mute an instrument to practice along
A stem splitter is a tool that separates a finished song back into its individual parts — its stems. Using AI source separation, it isolates the vocals, drums, bass and remaining instruments into distinct tracks you can use on their own. It is the fastest way to extract an acapella, pull a clean instrumental, or remove vocals from a song.
Defyaudio's stem splitter runs the separation model entirely in your browser, so your music never leaves your device. There is nothing to install and nothing to upload — just load a track, choose how many stems you want, and let the on-device AI do the work.
Whether you are a producer sampling a bassline, a DJ building live edits, or a singer who needs a karaoke backing track, the stem splitter gives you studio-style separation for free.
Pick the separation mode that fits your project. Both run on-device and export every track as WAV.
2 stems — Vocals + Instrumental
Split a song into a clean vocal track and a full instrumental. Ideal for making acapellas, karaoke backing tracks, or vocal removal.
4 stems — Vocals, Drums, Bass, Other
Full separation into four tracks. Perfect for remixing, sampling individual parts, or isolating the drums and bass for practice.
Separating a song with Defyaudio takes just a few clicks. Follow these steps to split any track into stems.
Open the Stem Splitter
Open the Audio Studio and select the Stem Splitter tool.
Add your song
Upload or drag in the track you want to separate — MP3, WAV, FLAC, OGG, M4A or AAC.
Choose a mode
Pick 2 stems (Vocals + Instrumental) for acapellas and karaoke, or 4 stems (Vocals, Drums, Bass, Other) for full separation.
Split the stems
Click "Split stems". The AI model runs on your device to isolate each track — nothing is uploaded.
Download your stems
Preview each stem and download the ones you need as high-quality WAV files.
It uses an AI source-separation model that runs entirely on your device to analyze a song and split it into separate tracks — vocals, drums, bass and other instruments. Nothing is uploaded; the model processes the audio locally in your browser.
Yes. Use the 2-stem mode to split a song into Vocals + Instrumental — perfect for making acapellas or karaoke backing tracks. The 4-stem mode separates Vocals, Drums, Bass and Other.
It's free with a free account, and fully private. Because separation happens on-device, your audio never leaves your computer — there is no server upload.
You can load common formats like MP3, WAV, FLAC, OGG, M4A and AAC. Each separated stem is exported as a high-quality WAV file.
It depends on the song length and your device. Because the AI model runs locally, faster hardware separates stems more quickly. A typical song takes a couple of minutes.